This book explores integrated information spaces in the web context and beyond, with a focus on putting theories and principles into practice. The authors illustrate the heightened significance of Information Architecture (IA) and User Experience (UX) in industry and society. Building on foundational perspectives, the book explores advanced topics such as user research, the evolving role of Artificial Intelligence (AI), human information behaviors, and systems thinking. This Third Edition adopts a forward-looking approach to integrated web, social media, business tools, and more. Additionally, the book covers advancements in information technologies since the last release, including Generative AI and evolving IA/UX practices.